A bonus is extra compensation paid to an employee on top of their regular salary or hourly wages. For IRS tax purposes, bonuses are classified as “supplemental wages” and are subject to specific tax withholding rules that can make them appear to be taxed at a higher rate than your normal paycheck.

1. Meaning of “ Bonuses ”

In plain English, a bonus is a financial reward from your employer. It could be an end-of-year holiday bonus, a performance-based reward for hitting sales goals, a signing bonus when you join a new company, or a retention bonus to keep you from leaving.

While you might see it as a special gift or reward, the IRS simply sees it as earned income. However, because it is paid outside of your normal, predictable wages, the government has created special payroll rules for how companies must calculate and deduct taxes from it.

2. Why “ Bonuses ” Matters

Understanding bonuses matters primarily for managing your financial expectations. The most common shock employees experience is seeing a massive chunk of their promised bonus disappear to taxes before the money even hits their bank account.

Because bonuses are classified as supplemental wages, employers do not withhold taxes using your standard W-4 allowances. Instead, they usually apply a mandatory flat federal tax rate. Knowing this in advance prevents you from budgeting for a $5,000 payout when your actual take-home check will be significantly less.

3. How “ Bonuses ” Works

When your employer issues a bonus, they must withhold federal income tax, state income tax, and payroll taxes (Social Security and Medicare). For the federal income tax portion, employers typically choose one of two IRS-approved methods:

The Percentage Method: The employer cuts you a separate bonus check and withholds a flat federal tax rate—currently 22% for amounts under $1 million (please verify rates for the current tax year).
The Aggregate Method: The employer adds your bonus to your regular paycheck. They then calculate your tax withholding on that massive combined amount as if it were your normal pay. This often artificially pushes you into a higher tax bracket for that single pay period, resulting in heavy withholding.

It is crucial to remember that this heavy withholding is not a penalty. If too much tax is withheld from your bonus during the year, you will get the excess money back as a tax refund when you file your annual Form 1040.

4. Simple Example of “ Bonuses ”

Let’s say you earn a $5,000 performance bonus, and your employer uses the Percentage Method. They will automatically withhold 22% ($1,100) for federal income taxes.

They will also withhold 7.65% ($382.50) for FICA taxes (Social Security and Medicare). Assuming your state also takes a 5% flat cut ($250), your total tax withholding is $1,732.50. You will take home $3,267.50 of your $5,000 bonus.

5. Who Is Affected by “ Bonuses ”?

Bonuses affect a wide variety of taxpayers in the workforce:

W-2 Employees: Receiving holiday, signing, or performance bonuses.
Sales Professionals: Receiving commission-based bonuses for hitting targets.
Employers: Payroll departments that must calculate supplemental wage withholding accurately to avoid IRS penalties.

Note: If you are an independent contractor (1099), extra money paid by a client is simply considered regular business income, not a supplemental wage bonus subject to automatic withholding.

6. Common Mistakes Related to “ Bonuses ”

Believing bonuses are taxed at a legally higher rate: Bonuses are ultimately taxed at your standard, normal income tax brackets. They just have a higher amount withheld upfront during payroll.
Forgetting about FICA and state taxes: Many people only calculate the 22% federal withholding and are shocked when state taxes and Social Security take an extra bite out of their bonus.
Assuming all bonuses are cash: If your employer gives you a non-cash bonus—like a paid vacation, a car, or even a $500 gift card—the cash value of that item is still taxable and must be reported on your W-2.

7. Forms Related to “ Bonuses ”

Bonuses are heavily tracked through standard employment tax forms:

Form W-2: Your total bonuses are lumped together with your regular salary and reported in Box 1 (Wages, tips, other comp).
Form 1040: The main tax return where you report your combined W-2 income, which includes your bonuses.

8. “ Bonuses ” vs. Related Terms

Bonuses vs. Wages: Wages are your predictable base pay (hourly or salary). Bonuses are extra, unpredictable compensation. Both are earned income, but bonuses are subject to supplemental withholding rules.
Bonuses vs. Fringe Benefits: A bonus is usually direct compensation for performance. A fringe benefit is an extra perk of the job, like employer-paid health insurance or a company gym membership, which may or may not be taxable.

9. Related Glossary Terms

10. FAQs About “ Bonuses ”

Are cash bonuses given under the table legal?
No. Giving or receiving a cash bonus without reporting it to the IRS or paying payroll taxes on it is considered tax evasion.

Can I ask my employer not to withhold taxes on my bonus?
No. Employers are legally required by the IRS to withhold federal and state taxes from supplemental wages. You cannot opt out.

What happens if my bonus is over $1 million?
If an employer pays you supplemental wages exceeding $1 million in a single calendar year, the IRS mandates that they withhold a flat 37% federal tax rate on the amount that exceeds the $1 million threshold.

Will a bonus push me into a higher tax bracket forever?
No. A bonus might push your total annual income into a higher tax bracket for the year, but because the U.S. uses a progressive tax system, only the income that falls into that specific top bracket is taxed at the higher rate.

11. Final Takeaway

A bonus is an excellent way to boost your annual income, but it comes with unique IRS withholding rules that can be confusing at first glance. Because the government treats bonuses as supplemental wages, they take a larger cut upfront to ensure you don’t owe massive taxes in April. By understanding how the flat 22% withholding or the aggregate method works, you can accurately estimate your true take-home pay and budget your bonus responsibly.

12. Disclaimer

Disclaimer: This article is for general educational purposes only and should not be considered tax, legal, or financial advice. Tax rules, thresholds, withholding rates, and deadlines can change, and your individual situation may be different. Please verify all information and rates for the current tax year. Consider consulting a qualified tax professional or CPA before making any tax-related decisions.

What Is “ Bonuses ”?